In what ways was the team in a wretched state when it reached skagway

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Arriving at Skagway from Dawson for the second time, only thirty days after they had departed, the dogs are in a wretched state. Along with the others, Buck has lost a lot of weight. They are all footsore, barely able to move. Months of constant toil have depleted strength and dissolved their muscle fibers. The men were tired as well and confidently told the dogs they would be getting a long rest.